Top hairstylists often rely on lotions and sprays that cost less than a latte. (Don't tell their fancy clients.)

By Jenny Bailly

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Infusium 23 Repair & Renew Leave-In Treatment, $6.99

The transformation is instantaneous when New York hairstylist Lisa Chiccine spritzes this leave-in conditioner on a client's hair: "As I comb it through, I can feel the hair getting softer." She recommends it for every hair type and has been using it on herself since she was a teenager. And this spray goes beyond post-shower detangling: Many experts recommend it to protect the hair at the beach or pool. Plus, it's brilliant at reinvigorating drooping curls—just spritz through dry hair and gently scrunch.